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// Copyright 2025 WIT.COM Inc Licensed GPL 3.0

package forgepb

import (
	"errors"
	"os"
	"os/user"
	"path/filepath"

	"go.wit.com/lib/config"
	"go.wit.com/lib/gui/prep"
	"go.wit.com/log"
)

// returns err1 || err2
func (f *Forge) ConfigSave() error {
	if f.Config == nil {
		return log.Errorf("forge.Config == nil")
	}

	if !config.HasChanged("forge") {
		return nil
	}

	// only let forge edit & save the config files
	// inforce this in lib config?
	if !(prep.AppName() == "forge" || prep.AppName() == "guireleaser") {
		log.Info("This is not forge")
		return log.Errorf("Only forge can save the forge config file")
	}

	// migrate from the old gopath to "namespace"
	for fc := range f.Config.IterAll() {
		if fc.Namespace != "" {
			continue
		}
		if fc.Namespace != fc.GoPath {
			fc.Namespace = fc.GoPath
		}
		// todo: deprecate this
		// fc.GoPath = "" // I want to do this but it might be a bad idea at this point
	}
	log.Info("Okay, this is", prep.AppName())

	if err := f.Config.ConfigSave(); err != nil {
		log.Info("forge.Config.ConfigSave() error", err)
		return err
	}
	return nil
}

func (f *Forge) SaveRepos() error {
	return f.Repos.ConfigSave(f.Config.ReposPB)
}

func (f *Forge) SetMode(newmode ForgeMode) error {
	if f.Config.Mode == newmode {
		// nothing changed
		return nil
	}
	f.Config.Mode = newmode
	err := f.Config.SaveVerbose()
	return err
}

// functions to import and export the protobuf
// data to and from config files

// write to ~/.config/forge/
func (cfg *ForgeConfigs) ConfigSave() error {
	var header string
	header += "\n"
	header += "# the forge config file\n"
	header += "# You can customize things like:\n"
	header += "#\n"
	header += "#    * which repos you have write access to\n"
	header += "#    * custom branch names for 'master', 'devel' and 'user'\n"
	header += "#    * 'favorites' so you can remember which things you like\n"
	header += "#    * sometimes protobuf TEXT can fail so as a backup this also creates a .json file\n"
	header += "#\n"
	header += "\n"
	return config.ConfigSaveWithHeader(cfg, header)
}

func (cfg *ForgeConfigs) DumpENV() {
	log.Info("s/DumpENV/DumpPB/")
	cfg.DumpPB()
}

func (cfg *ForgeConfigs) DumpPB() {
	log.Infof("Config.Filename  = %s\n", cfg.Filename)
	log.Infof("Config.ReposPB   = %s\n", cfg.ReposPB)
	log.Infof("Config.ReposDir  = %s\n", cfg.ReposDir)
	log.Infof("Config.PatchPB   = %s\n", cfg.PatchPB)
	log.Infof("Config.ForgeURL  = %s\n", cfg.ForgeURL)
	if cfg.GoWork {
		log.Infof("Config.GoWork    = %v\n", cfg.GoWork)
	}
	// log.Infof("ConfigCfgPB.Hostname=%s\n", cfg.Hostname)
}

/*
	if f.Config.Xterm == "" {
		f.Config.Xterm = "xterm"
		f.Config.XtermArgv = append(f.Config.XtermArgv, "-bg")
		f.Config.XtermArgv = append(f.Config.XtermArgv, "black")
		f.Config.XtermArgv = append(f.Config.XtermArgv, "-fg")
		f.Config.XtermArgv = append(f.Config.XtermArgv, "white")
		f.SetConfigSave(true)
	}
*/

func LoadStdConfig() *ForgeConfigs {
	cfg := NewForgeConfigs()
	err := config.ConfigLoad(cfg, "forge", "forge")

	if cfg.Filename == "" {
		panic("wtf filename blank")
	}

	if err == nil {
		return cfg
	}

	if errors.Is(err, os.ErrNotExist) {
		log.Info("no files existed err=", err)
	} else if errors.Is(err, config.ErrEmpty) {
		log.Info("files were blank err=", err)
	} else if errors.Is(err, config.ErrMarshal) {
		log.Info("files existed and could not be Marshalled() err=", err)
	} else {
		log.Info("some other bad problem err=", err)
	}

	// this is probably the users first time
	// TODO: check if ./config/forge exists, then something else went wrong...

	usr, _ := user.Current()
	cfg.Username = usr.Username

	homeDir, _ := os.UserHomeDir()

	cfgdir := filepath.Join(homeDir, ".config/forge")
	cfg.HomeDir = cfgdir
	os.MkdirAll(cfgdir, 0755)

	cfg.ReposPB = filepath.Join(cfgdir, "repos.pb")
	cfg.PatchPB = filepath.Join(cfgdir, "patches.pb")
	cfg.ForgeURL = "http://forge.wit.com/"

	cfg.ReposDir = filepath.Join(homeDir, "go/src") // todo: check working directory
	os.MkdirAll(cfg.ReposDir, 0755)

	cfg.addSampleConfigs()
	cfg.DumpENV()
	config.SetChanged("forge", true)
	// if !fhelp.QuestionUser("This is your first time using forge, use these default values?") {
	// 	os.Exit(-1)
	// }
	if err := cfg.ConfigSave(); err != nil {
		log.Info("config save error:", err)
		os.Exit(-1)
	}
	return cfg
}

// first time user. add go.wit.com as an example
func (cfg *ForgeConfigs) addSampleConfigs() {
	newc := new(ForgeConfig)
	newc.GoPath = "go.wit.com"
	newc.Writable = true
	newc.Directory = true
	cfg.Append(newc)

	newc = new(ForgeConfig)
	newc.GoPath = "priv.wit.com/corp"
	newc.Writable = true
	newc.Private = true
	newc.Directory = true
	cfg.Append(newc)
}